Taxchat

Hello I have an elderly client who needs to file a capital gains tax return through real time. They do not otherwise file self assessments. I understand this can only be done through their personal gateway account but is it possible for them to invite me into their account as a team member and thereby would it be possible for me to submit their capital gains tax return? I dont understand why there is no option for clients to authorise agents for this piece of service?

Many thanks

Client registered for a trademark a while back, they are looking to sell this now (the actual trademark, not just the right to use it). Should they be charging VAT on it?