Before you can assign a value to a custom field, it must be created. Refer to Custom fields: adding and modifying for details.

Depending on the object the custom field you want to assign a value to, there are 6 cases.

Project or Activities 

To assign a value to a custom field created for projects or activities (any type, tasks, issues, or requests):

1. Open Activity Center.
2. Open the details of a project or activity you want modified.
3. Under Custom fields, locate the custom field you want to give a value to.
4. Assign a value using the appropriate method, depending on the type of custom field. E.g. use a date selector, for a date format custom field.
5. The changes are saved automatically.

If the custom field is mandatory, you will not be able to save the page until after you have assigned a value to it. You will be prompted with a message 'This is a required field'. The same applies to the remaining cases below. Refer to Custom fields: adding and modifying for details on mandatory fields.

Users

To assign a value to a custom field created for users.

1. Click through  Login picture > Company Settings > Users.
2. Open the details of a project or activity you want modified.
3. Under Custom fields, locate the custom field you want to give a value to.
4. Assign a value using the appropriate method, depending on the type of custom field. E.g. use a date selector, for a date format custom field.
5. The changes are saved automatically.

Customers 

To assign a value to a custom field created for customers.

1. Click through  Login picture > Company Settings > Customers.
2. Open the details of a project or activity you want modified.
3. Under Custom fields, locate the custom field you want to give a value to.
4. Assign a value using the appropriate method, depending on the type of custom field. E.g. use a date selector, for a date format custom field.
5. The changes are saved automatically.

Portfolios 

To assign a value to a custom field created for portfolios.

1. Go to Projects & Tasks | Portfolios.
2. Open the details of a project or activity you want modified.
3. Under Custom fields, locate the custom field you want to give a value to.
4. Assign a value using the appropriate method, depending on the type of custom field. E.g. use a date selector, for a date format custom field.
5. The changes are saved automatically.

Expenses 

To assign a value to a custom field created for expenses.

1. Go to a project's Financial section.
2. Open the details of a project or activity you want modified.
3. Under Expenses, locate the custom field you want to give a value to.
4. Assign a value using the appropriate method, depending on the type of custom field. E.g. use a date selector, for a date format custom field.
5. The changes are saved automatically.

Time entries 

To assign a value to a custom field created for time entries.

1. Go to Time Logs.
2. Open the details of a time entry you want to modify.
3. Locate the custom field you want to give a value to.
4. Assign a value using the appropriate method, depending on the type of custom field. E.g. use a date selector, for a date format custom field.
5. The changes are saved automatically.