By default, inventory pages are stored in marker entities located a (0,0,0). In order to ensure these marker entities can be called upon at a moment's notice and are never unloaded, the chunk at (0,0) is forceloaded. Forceloading chunks can have performance implications, so this is a short tutorial on relocating the inventory markers to the center of your world.

With the data pack already installed and loaded once, the first step is to locate the center of your world, either by following a compass, or by setting a new world center with '/setworldspawn X Y Z'. The Y value is irrelevant, and an arbitrary one can be picked (such as 0). The X and Z values of your world center are what is most important.

Next, open the .mcfunction file data/hms/functions/inv_return.mcfunction. In inv_return, change the first command to 'tp @s X Y Z', where the coordinates are your world center. This will make all storage markers return to this location after being used.

To relocate the markers, run the command '/tp @e[​type=marker,tag=hms_inv] X Y Z', where again the coordinates are your world center.

Finally, in the .mcfunction file data/hms/functions/load.mcfunction, you can remove or comment out the line 'forceload add 0 0'. Running the command '/forceload remove 0 0' in-game after removing this line will unload the forceloaded chunk at (0,0)

Now markers will return to your world center, and no extra chunks will remain loaded!