No, you cannot enter limit orders in the sense where you can limit a buying order to the highest price you are willing to pay and the limit on a selling order on the lowest price you are willing to accept. You can make limit orders depending on the duration you want your order to be posted in the market. You can make DAY, GTW, GTM orders:

• DAY – an order to buy or sell shares at a specific price, which expires automatically at the end of the trading day if no match was made.
• GTW (Good-Til-Week) – an order that will remain valid/outstanding for seven (7) calendar days unless cancelled by client or PSE (eg. Announcement of Dividends) prior to expiration.
• GTM (Good-Til-Month) – an order that will remain valid/outstanding for twenty-nine (29) calendar days unless cancelled by client or PSE (eg. Announcement of Dividends) prior to expiration.