You need to furnish the info, by pasting the following in the web-form:
" Priority Code PPCHANGEWORK2020: I am requesting consideration under the Temporary public policy to exempt foreign nationals in Canada from certain requirements when changing employment during the coronavirus pandemic and request that the applicable exemptions be granted until the decision is made on my work permit application or it is withdrawn.
I attest that: I hold/held a work permit valid until [date] for employer [name] / in occupation [job title] and I have received new job offer for [new employer name] / [new occupation job title].
I have submitted my application for a work permit online or I submitted my application by paper and the postal/courier tracking number is [number].
I intend to work for the [new employer name] / [new occupation job title] specified in the afore-mentioned work permit application.
I understand that providing false, misleading or incorrect information is a violation of the Immigration and Refugee Protection Act and may result in enforcement measures against me."