Issue with access to 'My Client groups'

Summary:

Content (required):

We have a job role as Human Resource Specialist, and a lot of data roles inheriting the job role.

We are restricting the access to 'My Client Groups' using EL expression in Structures. But it looks like we exceeded the number characters as adding more data roles to the EL expression does not work?

Is there a character limit on the EL expression?

If yes, we need to restrict the roles to have access to 'my Client Groups'. What is the privilege/duty role that gives access to 'My Client Groups'?

Version (include the version you are using, if applicable):