2026 Calendar

The way I do calendars is with a blank return and numbering

Quick Setup 

In Type menu (at the top between Layout and Object) 

Go to Bullets and Numbering and define lists - and then set it like this (I put in Calender you can name it what you like).

Insert some blank returns 

Then set a new character style - I said Cal Dates here

Select Numbers

Select List you just created ('Calendar') 

As per below

Then just copy the blank return to all cells

Select cell and copy

Then paste 

Then select all cells of next month and Paste the blank cell as steps above

Delete any excess dates

You can then select other dates like Sat/Sun and apply another style to make it red text - just make sure it's based on your new style

Make sure you select the character colour to be red

You can take further steps of automation with Table Styles

But might be more work than necessary 

It's quick then to paste the numbers and style the left and right columns and put in extra faded dates. 

Seems like the person setup styles, but seems to be all tanked, there's paragraph styles, character styles and table styles already in place - looks like they were doing a good job. 

But none of the styles are applied to anything that I can see. 

Best to delete all the styles not in use and start over with your own styles and way of working it. 

Maybe they did use the Calendar Wizard script https://calendarwizard.sourceforge.net/

Hard to know. Maybe that's where all the styles came from. 

If you need it updated and can't do it yourself then it's obviouly worth paying a professional to handle the changes. 

Let us know if you get stuck or need more help.