If you're interested in how to allocate more RAM to Minecraft or your Minecraft server, have a look at our written tutorial.

Install the latest forge version to add mods to the Minecraft Aternos server (Image via Sportskeeda) After you've created the server, click on it to access the main configuration page.

To reallocate RAM to "Minecraft," you'll have to edit the game's settings through whatever launcher app you use.