Onboarding should not be used to gather such data. It should be a quick intro to the features of the application. Once the user is aware of what the application does, let him/her discover the advanced features layer by layer. Too many questions at the beginning will discourage users from getting to the main features.
You can run a quick Onboarding and then ...
You can definitely just make it similar to Excel, especially given that your end user is most familiar with Excel.
If you want to remove horizontal scrolling, then you can just hide or collapse the columns to ensure that all of them fit into the screen width. I will still suggest "make it exactly like excel".
I will suggest adding a link at the top with words like "Powered by ". Or maybe just "Looking for other events. Check out ".
You can also ask the team to change URL of child website to something like "www.parentsite.com/childsite". Keep the existing domain "www.childsite.com" and redirect it to the new URL. This way, every time user search for child ...
Depending how much you want to highlight the relationship you could use one of several approaches:
Do like stack exchange: add a link to the child site on the parent and vice-versa.
On the parent site: Add a section "built with our platform / facilitated by us / our events" and showcase / link to some / all the events, with a link to the child site. Or just ...
I think you might need to look at content marketing strategies for this. Maybe design some landing pages and direct traffic to it. But you could also think about how this website shows it's child websites, stack exchange has it's global nav and the child websites sit inside of them.
I doubt there are any universal guidelines.
Except maybe this: if the animation helps the user understand what they can do, what will happen, or what just happened, then it will be more useful than one that's unnecessary, just eye candy.
Your concerns are valid, I'll highly recommend including the month. Some reasons:
Users need just a brief moment of distraction to forget what they are thinking and as a industry rule it's better to avoid making them think and recheck unnecessarily.
There's not an easy way to deduce in what month we are based just on a day or its number.
To avoid the ...
I like the clarity you show in the bottom picture, but that’s only my opinion...
All to easy for some users to make an error with months... lots of checks are written with the wrong month as it changes...
I do not have an example, but some thoughts about such a toggle:
If you use a WCAG 2.0 conform contrast in the first place the toggle wouldn't be necessary. And there are more benefits in that: the readability of your site will be enhanced for all users.
Having a toggle might make some user feel handicapped because they need to change the settings of the ...
I think this is part of WCAG 2.0 requirement to provide minimum contrast ratio guidelines. Success criterion 1.4.3 and 1.4.6 mentions providing a style switcher to high contrast for the users with visual impairments.
More info can be found here: https://...