Although not as straightforward as loading a QT wallet on your machine, staking is relatively simple using just a few commands.

First step is to download MyEnergiWallet - https://wiki.energi.world/en/how-to/myenergiwallet

Then once you have your wallet setup you need to download the Core Node: https://wiki.energi.world/en/advanced/core-node-windows (Windows) or https://wiki.energi.world/en/advanced/core-node-mac (Mac).

After that just follow from Step 2 in the Staking Guide: https://wiki.energi.world/en/staking-guide which includes a video tutorial if you find that easier to follow.

If you need assistance with it there is a green chat icon on all the guide pages which will open a support session with the team.