How to enable ARI for user, but without voicemail?

Hello, I’m setting up FreePBX on Debian, and everything works ok, but I want my users to be able to check their CDRs, call recordings and other settings, but unfortunately they do not want voicemail. So, I am interested, is there any way to login to ARI interface without voicemail? or if not, can I disable voicemail when extension is busy?
Any help will be appreciated, thanks in advance and sorry for my English…