need to change some characters in template

Hello! I need ur help. I need to increase the number of characters in the short description of the Courses. And also that i need the schedule section of classes change in the settings where the “date” indicate not only numbers, but also symbols, for example, put “on Saturdays.” Help please, how and what i need to do to change in the php-files to increase my wishes into reality. Thx.

Please edit the Module of courses and you will see the option for Excerpt length you can set any number of Excerpt length there. Let me know if you find any problem you can also post your website wp-admin details here in a separate message. 

I need tape in events, at "details of event" in "Date of Event" not only number (date). I need tape there symbols, words, just like "on Saturday" (not only "01-10-2018")

Hi those fields accept strings, you can simply place on Saturday, or 2nd Saturday or month anything in that field and update. If you cant please send me your WordPress admin logins here. thanks.

Please send me your WordPress admin logins so i can check the following items for you.

1) Ateeq, i need to tape in this field only one time - "Every Suturday". I need to tape there words, not numbers. Please, say to me, where can i change .php fields to tape there words. I know php little bit, but can't find that field. And what i need to change there? 

2) How can i change mini-preview from box in circle on the testimoniels? I want to do same pictures, just like on teachers. Thx a lot for ur help

3) Can i change prewie only for carousel on index page for events? There are croped image, and it's look not good. U can look urself - http://rpcenter.pro/

4) How can i do more symbols in "Post Carousel" at description? I got small descriptions and need to show all information from news.