Orders for design development - SQL - new

I need help with creating a website traders chatroom, it must show traders online,offline,inactive. the chatroom top section must show four clocks with different times and time scale like this.. the chatroom must have a history data of up to 10days, then longer history must be deleted automatically. if you have better chatroom please say your recommendations

The overbought zone is determined as candlesticks, at which the indicator value Value > Lmax (Lmax=-20). The oversold zone is determined as candlesticks, at which the indicator value Value < Lmin (Lmin=-80). The values of Lmax and Lmin should be included in indicator parameters. A yellow point should be added at the High point of candlesticks in the overbought zone—it is the H point. A green point should be added at