Hello,
Can I add a ‘Phone Number’ field to the memberspace login form? Thanks
Yes you can! You should be able to add/delete fields.
Hi @afcincinnati ! Paige from MemberSpace, here. 
You can add custom sign-up fields to your signup form as explained in this guide.
If I can help with anything else, please let me know! You can always reach us by emailing support@memberspace.com. 