Yes, they can, manual trades do not interfere with their signal copied trades, the MQL5.com signal copying system can detects any non-signal trades and ignore them.
Thanks Eleni, what i mean is this way:The subscribers turn on their laptop, login to OTHER MT4 account (lets call it Account B) and trade using account B while Account A is copying my trade. Technically Account A is now logged off.
Is it possible?
It is possible in case the subscribers are using MQL5 VPS for subscription (their subscription is working in MQL5 VPS).
How to Subscribe to MT4/MT5 Signal -https://www.mql5.com/en/forum/189731 (MT4)https://www.mql5.com/en/forum/336422 (MT5)
As Sergey correctly remarked, they can do that only if they use a VPS, preferably MQL5 VPS, otherwise signal copying will be stopped when they log out of the signal subscription trading account.
According to the rules:
A trading account's entire history will be recorded and visible.
Please enable the necessary setting in your browser, otherwise you will not be able to log in.