General: Select source columns from the dropdown and click on Add. Also, select a YQMW column (Year-Quarter-Month-Week).

Once you do, you can perform the following operations on each column:

Edit the column name. Just click on pencil icon beside the column name, edit and click on green tick icon.
Select an aggregate function for the same column/row. The aggregate functions may vary based on the column you select.
Add conditional formatting on any column if you need.
- Select a column from the dropdown, 'Add a column'
- Select a releavant operator for the column
- Then, assign a value either a column (type @ to add column), number or a string
- Add a color for 'Cell background color' and 'Cell text color'
- Then, click on the green '+' icon to add the condition
- Once you add, they are stored under 'Current Validations' where you can edit or delete the condition.
Through Freeze toggle, set a column/row in a table to freeze mode (non-editable).
Choose to hide a column by clicking on an 'eye' icon which turns grey.
Delete any column you have selected.

How to create a Table chart?