Update RocketChat App(MeteorJS & MongoDB)

Dear Freelancers. I have a project which is using RocketChat. I need some changes and add functions. Before bidding for this project, please read the project description and write "RocketChat" on your proposal. If you didn't write this, I will not have a chat. I need using RocketChat on many sites. Every site has a Embed code (<iframe src="url?key=...."></iframe>). There are 3 types of users on our system. Admin, SiteManager, User - Admin Key Management. Ban KPI (it is the same dashboard of WordPress) - Site Manager Manage of Chat content. KPI - User The user can log in every site which introduced Embed code. If the user logged in one site, the user is logged in to other sites. Other Functions 1. Update Chat UI(HTML or Images will provide to freelancer.) 2. Update Admin Pages 3. Q&A ----------------- Details will provide via chat. If you can't do it in 15~20 days, don't bid this project. (I don't want to waste my time.)