If you don't already have a resource rule for TYPE(PGM) in place, create one before creating one for protecting the IND$FILE program.
To allow all Users access to all Programs:
Then, to allow all Users beginning with 'USERX' access to IND$FILE, create the following (PGM) resource rule.
Please note, in the above example, ONLY user with UID USERX will be allowed access to IND$FILE.
All other Users will be prevented from accessing IND$FILE by default.
Once the Resource rule is compiled and stored, make sure to run the ACF2 command, F ACF2,REBUILD(PGM), to activate resource rule validation.