The NetCommunity user guides document all available NetCommunity parts. However, NetCommunity is available in different versions (such as NetCommunity SPARK and NetCommunity GROW) and some parts are either available only as an add-on or are not available at all in these bundled versions. You may notice that the Forms section is not available under Site Explorer. You may notice Scheduled Emails is not available under Emails. You may not see Files under Site Explorer.
If you don't see a particular part type in the NetCommunity parts gallery and your installation is either NetCommunity SPARK or NetCommunity GROW, this part is likely not included in your NetCommunity base installation. If you'd like to discuss upgrading your NetCommunty package, contact your account manager.