UK Visa - Business meeting

I'm Uploading the supporting documents for the visa now & as I'm visiting for business related event I have the invitation letter, however I noticed this line in the checklist, Already hotel & flight are paid by my comany + daily expenses which I will refund after the visit yet this is not mentioned in the invite letter do I need to add this ?

"Confirmation from your employer confirming the reason for your visit, outlining the full nature of business activity whilst in the UK, including any payment or expenses that you will receive "