I know nothing about this area, other than looking at the aforementioned document briefly... but yeah, that's what it looks like. A longer quote from the same part,
https://www.gov.uk/government/uploa...2015-07-03_FINAL_Guidance_Part_2_SOA_2003.pdf
Page 42.
So, like you say, they can be prohibited from doing certain things - I don't know the full range, but I imagine it'd be eg. not being able to go to hang around outside schools, or be within a certain distance of someone's home, etc. But that's all just prohibiting certain things... and it says they can't have to take positive action (eg. informing them of an intention to have sex), outside of notifying them re: name/address changes. I guess they could be saying he's prohibited from engaging in sexual activity without informing them first, but that seems weird/a lot like they're requiring positive action

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Edit ::
In the document I've linked to you can see examples of when these orders will be applied for