Telegram message forwarder

Description

Im going to start a marketing agency on telegram using multiple telegram accounts to forward customers personal group message to x amount of other groups. Installing a subscription based plan with certain amount of groups to choose from. It needs a user panel with a GUI for me to work with
Example:Subscription plan A: forward message to 500 groups Subscription plan B: forward message to 1000 groupsSubscription plan C: forward message to 2000 groups
Step 1) make the program login to telegram accounts through webStep 2) join groups with the accountStep 3) forward automated messages from my channel to other groups with interval every 20minutes to 1hour simultaneously
Read doc for the requirements.