Expected array value error when deploying Timelock function

I am attempting to deploy TimelockController.sol (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/governance/TimelockController.sol)

The constructor function requires three variables upon deploy, a uint and 2 addresses. I put these three items in.

When I try to deploy it, I get an

Error encoding arguments: Error: expected array value (argument=null, value="my plaintext address", code=INVALID_ARGUMENT, version=abi/5.5.0)

This was after I manually put the address into Remix. First I tried putting brackets around the address and so on, but that didn't work. I tried to solve this by creating an address variable and assigning msg.sender to it, and pushing that using array.push(x) in the constructor function, but that didn't work.

How am I supposed to encode this data if I'm not using a Javascript implementation?