Add Module
From the Modules list, click Add Module to create a new low-code module. There are two ways to fill out the Module Picker, depending on whether you want a ready-made schema or one you design yourself.
Starting from a prebuilt module
Pick one of the ready-made types and the form collapses down to just Name and Module Picker. The schema (columns, field types, whether it's schedulable) is already defined for you.

All six named types (everything but Custom Module) come from Solodev, not something your organization defines -- if none fits, choose Custom Module and build your own schema.
Building a Custom Module
Choose Custom Module (the default) to design your own schema from scratch. The rest of the fields below only appear in this path.

Click Submit to create the module. You'll land on its module dashboard, ready to add entries.
Calendar vs. datatable modules
A module is a calendar-style module if Content is schedulable is checked in Schema Builder, and a datatable-style module if it's left unchecked. That single checkbox is the entire difference -- there's no separate "Calendar module" type to pick.
- Schedulable (calendar-style): every entry gets Start/Stop date fields, and the module's entries can be shown on a calendar view as well as a list. Blog, Events, and News are schedulable by default -- a blog post or event naturally has a publish date and, optionally, an end date.
- Not schedulable (datatable-style): entries are just rows with no date fields, shown as a plain list/table. Quick Links and FAQ are datatable-style by default -- a nav link or an FAQ entry doesn't need a publish window.
This also determines which URL pattern the module's own overview page uses under the hood (/modules/calendar/<id> vs /modules/datatable/<id>), though you'll normally just get there by clicking the module's name from the Modules list.