给妈妈STVP延期，ICA通知需要去交材料，其中这个材料看不懂

Please call in person together with your local sponsor at ICA Building, Visitor Services Centre, Visit Pass Unit, 4th Storey, 10 mins before your appointment time, with the following original documents:

• F14 AND LOCAL SPONSOR MUST BE PRESENT
• APPLICANT TO CALL IN PERSON
• APPLICANT'S VALID TRAVEL DOCUMENT
• APPLICANT'S DISEMBARKATION/EMBARKATION CARD
• LOCAL SPONSOR'S IDENTITY CARD
• LOCAL SPONSOR'S BIRTH CERTIFICATE

这两条什么意思啊？是说我和我妈都需要在场吗？其中多次提到call in person，请教一下什么意思。