Promoting your program is really two different jobs, and Vome gives you different tools for each:
Most organizations only use the first and forget the second, which is usually where the quickest wins are.

Start here. Go to your organization's Page and click Share, which copies the link to your clipboard, then paste it wherever you are recruiting.
It is a public URL, so anyone can open it without a Vome account. From that page a visitor can browse and register for your opportunities, submit a form to get involved, and follow you so they hear about future opportunities.
This is the one link worth putting on your website, your email footer and your social profiles, because it stays useful as your opportunities change.
Steps: How do I share the link to my organization's recruitment page?
Better than the page link when you are recruiting for one thing, because it drops people straight onto that opportunity instead of asking them to find it.
Use it for a targeted push: a single event, an urgent gap, a role needing a particular skill.
Steps: How do I share a link to an opportunity?
Use this when you want information before anyone is matched to an opportunity, such as a general expression of interest.
Steps: How do I share a link to a form?
People who follow your organization can be told when you publish something new, using Notify followers.
Two things to know, because they surprise people:
So decide before you hit publish, not after.
A call-out reaches profiles already in your database, and it is the fastest way to fill a shift.
You choose what it is for:
Then you choose who receives it. You can send to all profiles, only Vome users, offline profiles, or a selection you pick by name or email. You can also target by relationship to the opportunity: anyone already assigned to it, anyone not assigned to it, anyone assigned to any opportunity in the same category, or every active profile.
That targeting is the useful part. Asking the people who are not yet assigned to a struggling opportunity is a much better message than another broadcast to your whole list.
Issuing a call-out is permission controlled, so if you cannot see the option your admin role does not allow it.