How do I/we update billing rates in a weekly timesheet after importing from Quickbooks time (formerly Tsheets)?

Until earlier this month, we could go to "New", "Weekly Timesheets", select our consultants, and then update hourly rates by client/project.  A lot of manual work, but doable.  Now the interface has changed and there is a weekly view where you can click on a consultant time entry, and the billing rate field is displayed but the field is uneditable.  We are a consulting firm where rates differ by consultant by client/project.  How do I edit the billing rate as we cannot send invoices at all until these can be updated?

For those that have experienced same, I reached out to QBOnline help yesterday via chat.  I spoke to a QBonline customer service rep, who in turn, transferred me to a QBtime resource, who confirmed that the time product cannot accommodate different billing rates by consultant by client, which I knew.  I was then transferred to the QBOnline team.   They in turn transferred me back to the QBTime team even after I asked them not to.  During a three hour timeframe yesterday, I spoke with no less than 7 QBOnline and QBTime customer services reps -  twice I told the QBOnline team that this was a QBOnline issue, not a QBTime issue.  I eventually called and they could not answer the question - so 8 customer service reps in total and still no solution.  Something changed and Intuit cannot seem to identify or resolve the issue.  Hoping someone in this forum can assist - as I risk abandoning the product.