I've figured that some questions have been asked frequently enough that I should post a discussion topic about it.

The main way to configure ISAWC is via the console. Type isawc_help to view the list of available commands (ConCommands) and variables (ConVars).

To view all server options, use the isawc_activate_options_menu_server ConCommand. Players are able to access their per-player settings via the isawc_activate_options_menu_client ConCommand.

At default settings, hold F for one second to pick up items. You can also use the context menu right click property to pick up items.

Since F is also the default key for the flashlight, you should probably change it to something else.

In Sandbox, you can configure the options in the Client section within the ISAWC section at the top-right of the spawnmenu. Otherwise, you have to change the ConVars "isawc_pickup_bind" and "isawc_player_bind".

Set "isawc_container_alwayspublic" to 1. You can also set the ConVar to 2 which will make players only be able to open containers owned by a player on the same team.

Typically, containers will already have their inventory saved, as the entity metadata is stored in the container entity table itself.

Nonetheless, you can adjust the "isawc_container_save" ConVar in the server console to make containers save their inventories into sv.db, so that the container will also save and load their inventory to and from the database file, so long as the container File ID is preserved. Please note that this feature is in beta, use it at your own peril.

Whenever a player dies, a container with the player's inventory (including weapons) will be spawned at the player's position. This container will belong to the world rather than any specific player.

An item stamp is a serializable factory of an item that persists between map changes and server restarts. Item stamps are actually internal duplications, which allows copies of an item to be created even when no copies currently exist in the map. As an administrator, you can create an item stamp from an item with the isawc_stamps_create ConCommand, and create an item from an item stamp with the isawc_stamps_restore ConCommand.

You need to use the Loot Attacher SWEP after creating a loot table.