Hi @Saurabh Gupta  

If that is possible, please let us know how?  Thanks

Hi @Lisa Goldman 
OOTB there is a field level ACL on it, you can update that as per your need.

Thank you for your suggestion @Musab Rasheed . Unfortunately, I wasn’t able to open the link you provided. If you happen to know the name of the ACL that controls the field, could you please share it? That would save me some time searching.

I found the ACL that controls the Approver field. Thank you, everyone